Although casual car sharing has a long history, “The rise of cellphones and now smartphones has brought a whole new dimension to the process. Piggybacking on the casual-carpool model, Web sites and smartphone apps have been creating virtual gathering spots to match drivers and passengers.” The lure can be free rides, lower tolls with multiple passengers, not having to find a parking space, or even micro amounts of money added to your bank account with a new pilot start-up. Another way that VMT is likely to be reduced.